This list includes Registered Installers who have indicated they work in this county. The list also shows some other counties served. For more registered installers, you can return to the map and check for installers that work in other nearby counties.

Any installer on this list can install basic OWTS. Advanced OWTS installers are noted with ADV and can install advanced OWTS. The requirements for advanced OWTS installers are effective July 1, 2005. There may be additional requirements to work in some counties. Contact the county onsite sewage authority to confirm that an individual can install systems in the county.

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Missouri Registered OWTS Installers List

Advanced Status Last Name First Name MI Date of Expiration Business Address City State Zip Code Business Phone Counties Served
ADV. Colton Tim W 6/30/2019 TW Colton Plumbing & Excavating 1307 St. Andrew Columbia MO 65203 (660) 808-3518 Schuyler, Boone, Putnam, Adair

Hendee Randy J 6/30/2019 Randy J Hendee 29572 133rd St. Unionville MO 63565 (636) 947-3320 Putnam, Sullivan, Schuyler
ADV. McKim Alan D 2/28/2018 Mo Dept. of Conservation 3500 South Baltimore Kirksville MO 63501 (660) 785-2420 Adair Sullivan Putnam Macon Schuyler

Nelson Steven E 8/31/2019 Nelson Electric LLC 102 W. Jackson Lancaster MO 63548 (660) 457-3985 Schuyler, Putnam, Adair, Scotland

Oberholtzer Marlin N 2/28/2018 Oberholtzer Plumbing LLC 347 S. Ridge St. Memphis MO 63555 (660) 465-8900 Scotland, Clark, Knox, Schuyler, Lewis

Sands Randy L 1/31/2020 Sands Septic Pumping 17470 Hwy 129 Unionville MO 63565 (660) 947-7765 Putnam, Mercer, Sjullivan, Adair, Schuyler
ADV. Schmid Joe
4/30/2020 Schmid Construction 2303 Woodwind Ct Kirkville MO 63501 (660) 665-7859 Adair, Schuyler, Putnam, Knox

Schoonover Scott B 7/31/2020 Schoonover Electric Plumbing & HVAC, LLC 1717 Main St. Unionville MO 63565 (660) 947-2184 Putman, mercer, schuyler, sullivan


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Contact us if you have questions about this list, or to update or correct an address.